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authorBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
committerBen Cheng <bccheng@google.com>2014-03-26 05:37:19 (GMT)
commit1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch)
treec607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/machmode.h
parent283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff)
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Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/machmode.h')
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diff --git a/gcc-4.9/gcc/machmode.h b/gcc-4.9/gcc/machmode.h
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+/* Machine mode definitions for GCC; included by rtl.h and tree.h.
+ Copyright (C) 1991-2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef HAVE_MACHINE_MODES
+#define HAVE_MACHINE_MODES
+
+/* Make an enum class that gives all the machine modes. */
+#include "insn-modes.h"
+
+/* Get the name of mode MODE as a string. */
+
+extern const char * const mode_name[NUM_MACHINE_MODES];
+#define GET_MODE_NAME(MODE) mode_name[MODE]
+
+/* Mode classes. */
+
+#include "mode-classes.def"
+#define DEF_MODE_CLASS(M) M
+enum mode_class { MODE_CLASSES, MAX_MODE_CLASS };
+#undef DEF_MODE_CLASS
+#undef MODE_CLASSES
+
+/* Get the general kind of object that mode MODE represents
+ (integer, floating, complex, etc.) */
+
+extern const unsigned char mode_class[NUM_MACHINE_MODES];
+#define GET_MODE_CLASS(MODE) ((enum mode_class) mode_class[MODE])
+
+/* Nonzero if MODE is an integral mode. */
+#define INTEGRAL_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_INT \
+ || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \
+ || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_INT)
+
+/* Nonzero if MODE is a floating-point mode. */
+#define FLOAT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_FLOAT \
+ || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT \
+ || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT)
+
+/* Nonzero if MODE is a complex mode. */
+#define COMPLEX_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \
+ || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)
+
+/* Nonzero if MODE is a vector mode. */
+#define VECTOR_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_VECTOR_INT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_FLOAT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
+
+/* Nonzero if MODE is a scalar integral mode. */
+#define SCALAR_INT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_INT \
+ || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT)
+
+/* Nonzero if MODE is a scalar floating point mode. */
+#define SCALAR_FLOAT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_FLOAT \
+ || GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
+
+/* Nonzero if MODE is a decimal floating point mode. */
+#define DECIMAL_FLOAT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_DECIMAL_FLOAT)
+
+/* Nonzero if MODE is a scalar fract mode. */
+#define SCALAR_FRACT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_FRACT)
+
+/* Nonzero if MODE is a scalar ufract mode. */
+#define SCALAR_UFRACT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_UFRACT)
+
+/* Nonzero if MODE is a scalar fract or ufract mode. */
+#define ALL_SCALAR_FRACT_MODE_P(MODE) \
+ (SCALAR_FRACT_MODE_P (MODE) || SCALAR_UFRACT_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar accum mode. */
+#define SCALAR_ACCUM_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_ACCUM)
+
+/* Nonzero if MODE is a scalar uaccum mode. */
+#define SCALAR_UACCUM_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_UACCUM)
+
+/* Nonzero if MODE is a scalar accum or uaccum mode. */
+#define ALL_SCALAR_ACCUM_MODE_P(MODE) \
+ (SCALAR_ACCUM_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar fract or accum mode. */
+#define SIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
+ (SCALAR_FRACT_MODE_P (MODE) || SCALAR_ACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar ufract or uaccum mode. */
+#define UNSIGNED_SCALAR_FIXED_POINT_MODE_P(MODE) \
+ (SCALAR_UFRACT_MODE_P (MODE) || SCALAR_UACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar fract, ufract, accum or uaccum mode. */
+#define ALL_SCALAR_FIXED_POINT_MODE_P(MODE) \
+ (SIGNED_SCALAR_FIXED_POINT_MODE_P (MODE) \
+ || UNSIGNED_SCALAR_FIXED_POINT_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar/vector fract mode. */
+#define FRACT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_FRACT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_FRACT)
+
+/* Nonzero if MODE is a scalar/vector ufract mode. */
+#define UFRACT_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_UFRACT \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_UFRACT)
+
+/* Nonzero if MODE is a scalar/vector fract or ufract mode. */
+#define ALL_FRACT_MODE_P(MODE) \
+ (FRACT_MODE_P (MODE) || UFRACT_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar/vector accum mode. */
+#define ACCUM_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_ACCUM \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_ACCUM)
+
+/* Nonzero if MODE is a scalar/vector uaccum mode. */
+#define UACCUM_MODE_P(MODE) \
+ (GET_MODE_CLASS (MODE) == MODE_UACCUM \
+ || GET_MODE_CLASS (MODE) == MODE_VECTOR_UACCUM)
+
+/* Nonzero if MODE is a scalar/vector accum or uaccum mode. */
+#define ALL_ACCUM_MODE_P(MODE) \
+ (ACCUM_MODE_P (MODE) || UACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar/vector fract or accum mode. */
+#define SIGNED_FIXED_POINT_MODE_P(MODE) \
+ (FRACT_MODE_P (MODE) || ACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar/vector ufract or uaccum mode. */
+#define UNSIGNED_FIXED_POINT_MODE_P(MODE) \
+ (UFRACT_MODE_P (MODE) || UACCUM_MODE_P (MODE))
+
+/* Nonzero if MODE is a scalar/vector fract, ufract, accum or uaccum mode. */
+#define ALL_FIXED_POINT_MODE_P(MODE) \
+ (SIGNED_FIXED_POINT_MODE_P (MODE) \
+ || UNSIGNED_FIXED_POINT_MODE_P (MODE))
+
+/* Nonzero if CLASS modes can be widened. */
+#define CLASS_HAS_WIDER_MODES_P(CLASS) \
+ (CLASS == MODE_INT \
+ || CLASS == MODE_PARTIAL_INT \
+ || CLASS == MODE_FLOAT \
+ || CLASS == MODE_DECIMAL_FLOAT \
+ || CLASS == MODE_COMPLEX_FLOAT \
+ || CLASS == MODE_FRACT \
+ || CLASS == MODE_UFRACT \
+ || CLASS == MODE_ACCUM \
+ || CLASS == MODE_UACCUM)
+
+/* Get the size in bytes and bits of an object of mode MODE. */
+
+extern CONST_MODE_SIZE unsigned char mode_size[NUM_MACHINE_MODES];
+#define GET_MODE_SIZE(MODE) ((unsigned short) mode_size[MODE])
+#define GET_MODE_BITSIZE(MODE) \
+ ((unsigned short) (GET_MODE_SIZE (MODE) * BITS_PER_UNIT))
+
+/* Get the number of value bits of an object of mode MODE. */
+extern const unsigned short mode_precision[NUM_MACHINE_MODES];
+#define GET_MODE_PRECISION(MODE) mode_precision[MODE]
+
+/* Get the number of integral bits of an object of mode MODE. */
+extern CONST_MODE_IBIT unsigned char mode_ibit[NUM_MACHINE_MODES];
+#define GET_MODE_IBIT(MODE) mode_ibit[MODE]
+
+/* Get the number of fractional bits of an object of mode MODE. */
+extern CONST_MODE_FBIT unsigned char mode_fbit[NUM_MACHINE_MODES];
+#define GET_MODE_FBIT(MODE) mode_fbit[MODE]
+
+/* Get a bitmask containing 1 for all bits in a word
+ that fit within mode MODE. */
+
+extern const unsigned HOST_WIDE_INT mode_mask_array[NUM_MACHINE_MODES];
+
+#define GET_MODE_MASK(MODE) mode_mask_array[MODE]
+
+/* Return the mode of the inner elements in a vector. */
+
+extern const unsigned char mode_inner[NUM_MACHINE_MODES];
+#define GET_MODE_INNER(MODE) ((enum machine_mode) mode_inner[MODE])
+
+/* Get the size in bytes or bites of the basic parts of an
+ object of mode MODE. */
+
+#define GET_MODE_UNIT_SIZE(MODE) \
+ (GET_MODE_INNER (MODE) == VOIDmode \
+ ? GET_MODE_SIZE (MODE) \
+ : GET_MODE_SIZE (GET_MODE_INNER (MODE)))
+
+#define GET_MODE_UNIT_BITSIZE(MODE) \
+ ((unsigned short) (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))
+
+#define GET_MODE_UNIT_PRECISION(MODE) \
+ (GET_MODE_INNER (MODE) == VOIDmode \
+ ? GET_MODE_PRECISION (MODE) \
+ : GET_MODE_PRECISION (GET_MODE_INNER (MODE)))
+
+/* Get the number of units in the object. */
+
+extern const unsigned char mode_nunits[NUM_MACHINE_MODES];
+#define GET_MODE_NUNITS(MODE) mode_nunits[MODE]
+
+/* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
+
+extern const unsigned char mode_wider[NUM_MACHINE_MODES];
+#define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode) mode_wider[MODE])
+
+/* For scalars, this is a mode with twice the precision. For vectors,
+ this is a mode with the same inner mode but with twice the elements. */
+extern const unsigned char mode_2xwider[NUM_MACHINE_MODES];
+#define GET_MODE_2XWIDER_MODE(MODE) ((enum machine_mode) mode_2xwider[MODE])
+
+/* Return the mode for data of a given size SIZE and mode class CLASS.
+ If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE.
+ The value is BLKmode if no other mode is found. */
+
+extern enum machine_mode mode_for_size (unsigned int, enum mode_class, int);
+
+/* Similar, but find the smallest mode for a given width. */
+
+extern enum machine_mode smallest_mode_for_size (unsigned int,
+ enum mode_class);
+
+
+/* Return an integer mode of the exact same size as the input mode,
+ or BLKmode on failure. */
+
+extern enum machine_mode int_mode_for_mode (enum machine_mode);
+
+/* Return a mode that is suitable for representing a vector,
+ or BLKmode on failure. */
+
+extern enum machine_mode mode_for_vector (enum machine_mode, unsigned);
+
+/* A class for iterating through possible bitfield modes. */
+class bit_field_mode_iterator
+{
+public:
+ bit_field_mode_iterator (HOST_WIDE_INT, HOST_WIDE_INT,
+ HOST_WIDE_INT, HOST_WIDE_INT,
+ unsigned int, bool);
+ bool next_mode (enum machine_mode *);
+ bool prefer_smaller_modes ();
+
+private:
+ enum machine_mode m_mode;
+ /* We use signed values here because the bit position can be negative
+ for invalid input such as gcc.dg/pr48335-8.c. */
+ HOST_WIDE_INT m_bitsize;
+ HOST_WIDE_INT m_bitpos;
+ HOST_WIDE_INT m_bitregion_start;
+ HOST_WIDE_INT m_bitregion_end;
+ unsigned int m_align;
+ bool m_volatilep;
+ int m_count;
+};
+
+/* Find the best mode to use to access a bit field. */
+
+extern enum machine_mode get_best_mode (int, int,
+ unsigned HOST_WIDE_INT,
+ unsigned HOST_WIDE_INT,
+ unsigned int,
+ enum machine_mode, bool);
+
+/* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
+
+extern CONST_MODE_BASE_ALIGN unsigned char mode_base_align[NUM_MACHINE_MODES];
+
+extern unsigned get_mode_alignment (enum machine_mode);
+
+#define GET_MODE_ALIGNMENT(MODE) get_mode_alignment (MODE)
+
+/* Get the precision of the mode or its inner mode if it has one. */
+
+extern unsigned int element_precision (enum machine_mode);
+
+/* For each class, get the narrowest mode in that class. */
+
+extern const unsigned char class_narrowest_mode[MAX_MODE_CLASS];
+#define GET_CLASS_NARROWEST_MODE(CLASS) \
+ ((enum machine_mode) class_narrowest_mode[CLASS])
+
+/* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
+ and the mode whose class is Pmode and whose size is POINTER_SIZE. */
+
+extern enum machine_mode byte_mode;
+extern enum machine_mode word_mode;
+extern enum machine_mode ptr_mode;
+
+/* Target-dependent machine mode initialization - in insn-modes.c. */
+extern void init_adjust_machine_modes (void);
+
+#define TRULY_NOOP_TRUNCATION_MODES_P(MODE1, MODE2) \
+ TRULY_NOOP_TRUNCATION (GET_MODE_PRECISION (MODE1), \
+ GET_MODE_PRECISION (MODE2))
+
+#define HWI_COMPUTABLE_MODE_P(MODE) \
+ (SCALAR_INT_MODE_P (MODE) \
+ && GET_MODE_PRECISION (MODE) <= HOST_BITS_PER_WIDE_INT)
+
+#endif /* not HAVE_MACHINE_MODES */